Change a product

Partner key + restaurant key. The fields from creation plus isAvailable (sold out), isActive and imageUrl (an image from the LettBestilt image library or uploaded to LettBestilt, or null); left out = unchanged, at least one field. variants and allergens are replaced as a set when sent (an empty list removes all); with variants and without basePrice the base price becomes the default size’s. Send the ids from GET to keep the rows: a row with id is updated in place, a row without id is new (new id), and rows that are left out are deleted. New ids can make orders fail for up to six minutes, because the website shows the cached menu. Size prices (tierPrices) cannot be set through the API: a new addon in a group with sizes costs the same for all sizes (unless a deleted addon with the same name had prices), and a new size without addonTierKey gives the addons their base price. notice says so. imageIsStock (the website must then label the image «Illustrasjonsfoto») changes only when imageUrl changes. Through LettBestilt MCP a size is never deleted: if variants lacks a size that exists (also when it is sent without id, as a new one), the response is 422 VALIDATION_FAILED with the path variants and the names, and nothing is changed. New sizes and changes with id are allowed. A person removes sizes in the restaurant dashboard or with the partner API directly. Optimistic concurrency: GET (and every write response) has version, a hash of the row and its sizes (product) or its sizes and addons (addon group). Send it back as expectedVersion: if anything changed since you read it, nothing is written and the response is 409 CHANGED; read it again and retry. Without expectedVersion the write is only conditional on the row as it was read inside the request, so a change made after your GET is overwritten. Always send it when you work from an earlier read (an AI tool working from an old get_menu). expectedUpdatedAt is rejected with 422. A price above 0 and below 500 øre (5 kr) is saved, but gives a warning in warnings ([{ path, message }]): it looks like kroner (149 for 149 kr). Names and descriptions are trimmed and cleaned (links, email addresses, HTML, javascript: and invisible direction marks are removed); the count is in textCleaned, and a name that ends up empty gives 422. GET /api/v1/menu is CDN-cached (s-maxage=30, stale-while-revalidate=300, at most 330 seconds), so the website can show the old menu for up to six minutes; the response has notice about it.